Welded pipe



Oct. 16,, 1928.

1,687,895 w. E. RUPLEY WELDED PIPE Original Filed Sept. 26. 1925 Patented Get. "M5, 1928.

UNITED STATES Y 1,687,895 A E T -FF1ce.

WILLIAM E. nurnnr, or nos ANGELES, CALIFORNIA, essronon TO WESTERN PIPE AND CGMPANY or CALIFORNIA, or SAN FRANCISCQ'CALIFORNIA; A don Eon-Arron or CALIFORNIA.

wn'nnnn PIPE.

Original application filed September :6, 935, Serial N0. 8,9. 5 2. Divided and this application'fl'l'ed August 5, 1926. Serial no. 127,355. V

formed or a continuous section of sheetmetal formed to the proper curvature and secured together at a longitudinal welded end to a stove pipe casing, constructed-0t a plurality of concentric sections or such welded pipe,

the outer of which concentric sections is welded at the longitudinal seam to the periphery of the inner section.

This application is a d'visionof my eopending application for welded pipe and method and apparatus for'forming the same,

filed September 26,1925, Serial No.58,952.

An object of this lnvention is to provide a welded pipe of a single sheet of steel rolled to cylindrical form and welded at a longitudihal seam and the edges of the said tubular sheets and which welded pipe is adapted to be employed for a fluid conduit or which may be employed as the inner member oia stove pipe casing.

Another object of this invention is to provide a stove pipe. casing made of stands of.

easing constructed of concentric casing members, each of which concentric casing members is formed from'asingle portion of sheet metal rolled to the desired shape, and which concentric casings are rigidly secured one to the other at a longitudinal seam.

Another object ofthis invention is to provide a stove pipe casing having'a uniform exterior contour throughout its length. so that the same will not hang up during the driving of the same into a well. 7

Other objects and advantages of this invention will be apparent from the following de-' tailed description of a preferred embodiment thereof, as illustrated in the accompanying drawings, in which drawings s Figure 1 is a side elevation of a stove pipe casing embodying this invention. V s

Figure 2 is an end section of l a welded pipe embodying this invention.

Figure 3 is an end sectional View taken substantially on the line 3-V3 of Figure 1 Figure 4 is a side elevation, partly in vert-ical. section, of a fragment of stove pipe casingembodying this invention, illustrating the manner of assembling the stands of casing.

in the preferred embodiment of this invention illustrated in the accompanying draws, 1 "lustrates a stand of easing which is (tired to a second stand of casing Q at the joints or welds 3 and 4, The stand'sfof a; utting edges 5 by means of a butt We d 7,

the innert'ubular member 5 being properly welded 1s then secured within the outer tfubular member '6 whichis llke'wi'se formed 'of a single portion of rolled sheet metal a d which is positioned around the inner-tubii r member 5' and has it's abutting edges 6* forcedtogether and welded at a butt weld 8 to the in ner tubular member 5 so that the tubular members 5 land 6 are rigidly secured together atthe weld 8 along the longitudinal seam' which extends throughout the stand of casing.

The end 9 of the inner tubular member 5 projects from one end ofthe casing 6, as illustrated in Figure 4. The end 10 of the outer tubular member 6 extends beyond the end of the inner tubular member 5 at the opposite end of the stand of easing, sothat the end 9 of one stand of casing 1 may be fitted within the end 10 of a second stand of easing 2. The projecting ends 9 and 10 are of equal length so that the end of the inner tubular member 5 abuts the ends of the second tubular member 5, and so that the upper end of the tubular outer member of the casing 2 abuts the lower end of the tubular member 6 of the casing 1. Being so positioned, the abutting ends of the tubular members 6 are butt Welded together abutting ends-0f two suchtubular members 5 may be welded together and secured by the Weld to the outer tubular member '6 of the stands 2 of easing. V

The inner tubular members or Weldedpipes 5 are formed of a single portion of metal IOU which is first rolled to approximately the'desired-or required diameter in'any preferred,

or desired manner and as is well'understood in the art. 6

, Having fully described a preferredmbodif merit of my invention; it is ea -ta ilfidlitdod I claim:

1. A stove pipe casing comprising an elongated inner tubular member and an elongated outer tubular member, the said inner member being concentrically positioned Within the said outer member so that the end of the inner member extends beyond the end of the outer nember and a Welded longitudinal seam for securing the outer member to the inner member.

2. A stove pipe casing comprising concentric inner and outer tubular members, the said outer tubular member being formed of a continuous rolled sheet of metal Welded together at its abutting edges and to the said inner member.

3. A stove pipe casing comprising concentric one-piece tubular members forming a stand ofcasing the outer tubular member being vvelded together and to'the said inner tubular member at a longitudinal seam.

4. A stove pipe casing comprising concentric one-piece tubular members forming a stand of easing, the outer tubular member being formed of sheet metal and secured together and to the inner tubular member at a Welded longitudinal seam and the end of the 01 sheets of metal, the longitudinal edges of the inner member being simultaneously Welded together and to the outer member'and the longitudinal edges of the outer member being simultaneously Welded together and to the inner member.

Signed at Los Angeles, California, this th day of July 1926.

WILLIAM E. RUPLEY. 

